Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
25 + 20 = ______
1 × 10 = ______
8 × 10 = ______
22 − 10 = ______
52 + 20 = ______
66 − 10 = ______
5 × 10 = ______
49 − 10 = ______
77 − 10 = ______
9 × 10 = ______
15 + 10 = ______
30 + 10 = ______
40 + 10 = ______
20 + 10 = ______
37 + 20 = ______
61 + 10 = ______
54 + 10 = ______
70 − 10 = ______
32 − 10 = ______
52 − 10 = ______
